package org.csmz.class2334;

public class example04 {
    public static void main(String[] args){
        String username1 = "heima12345!";
        String username2 = "Heima12345";
        System.out.println("字符串"+username1+"是否以heima开头:"+username1.startsWith("heima"));
        System.out.println("字符串"+username1+"是否以！结尾:"+username1.endsWith("!"));
        System.out.println("字符串"+username1+"是否为空:"+username1.isEmpty());
        System.out.println("字符串"+username1+"是否包含字符串123:"+username1.contains("123"));
        System.out.println("字符串"+username2+"内容是否相同:"+username1.equals(username2));
        System.out.println("忽略大小写判断字符串"+username1+","+username2+"内容是否相同:"+username1.equalsIgnoreCase(username2));
        System.out.println("按Unicode比较字符串"+username1+","+username2+"的大小"+username1.compareTo(username2));

    }
}